In Hyper-V Manager, choose the VM and then "Settings". Click on the Integration Services option and ensure “Operating System Shutdown” is enabled.

Choose "Automatic Stop Action" option under Management.

Choose "Shut down the guest operating system".

For PowerChute Network Shutdown v3.1 and above, steps 5 and 6 are not required if you have enabled the VM shutdown option in PowerChute when Hyper-V Support has been enabled.
If you wish to allow Hyper-V to handle VM shutdown instead then enable the Automatic Stop action as outlined in steps 5 and 6 above.